Retrieving More Hardware Information With Internet Explorer and JavaScript - How to list the BUS information available in a computer using JavaScript
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Now, let us try to develop a simple script (JavaScript) which shows the technique for retrieving the BUS information available in a computer. The entire code for the sample is as follows:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title></title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET
7.1"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/
intellisense/ie5">
<script id="clientEventHandlersJS" language="javascript">
<!--
functionButton1_onclick() {
var locator = new ActiveXObject ("WbemScripting.SWbemLocator");
var service = locator.ConnectServer(".");
var properties = service.ExecQuery("SELECT * FROM Win32_BUS");
var e = new Enumerator (properties);
document.write("<table border=1>");
dispHeading();
for (;!e.atEnd();e.moveNext ())
{
var p = e.item ();
document.write("<tr>");
document.write("<td>" + p.BusType + "</td>");
document.write("<td>" + p.DeviceID + "</td>");
document.write("<td>" + p.PNPDeviceID + "</td>");
document.write("<td>" + p.SystemName + "</td>");
document.write("</tr>");
}
document.write("</table>");
}
functiondispHeading()
{
document.write("<thead>");
document.write("<td>BusType</td>");
document.write("<td>DeviceID</td>");
document.write("<td>PNPDeviceID</td>");
document.write("<td>SystemName</td>");
document.write("</thead>");
}
//-->
</script>
</head>
<body> <INPUT id="Button1" type="button" value="Button" name="Button1"
language="javascript" onclick="return Button1_onclick()">
</body>
</html>
The above would automatically list all BUS information belonging to a computer. It mainly lists the type of bus, device id, PNP device ID and system name. To retrieve this information, I used a built-in class, “Win32_BUS.”
The “for” loop I used in the above code iterates for every BUS present in the system and finally retrieves only the properties of that BUS.
Next: How to list the memory (RAM) information available in a computer using JavaScript >>
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